CN106396544A - Self-healing polymer cement waterproof coating - Google Patents
Self-healing polymer cement waterproof coating Download PDFInfo
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- CN106396544A CN106396544A CN201610765404.9A CN201610765404A CN106396544A CN 106396544 A CN106396544 A CN 106396544A CN 201610765404 A CN201610765404 A CN 201610765404A CN 106396544 A CN106396544 A CN 106396544A
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- polymer cement
- cement waterproof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A self-healing polymer cement waterproof coating includes a liquid A component and a powder B component; the liquid A component and the powder B material are mixed for use with the mass ratio of 1:(0.8-1.5); the liquid A component consists of the following raw materials by the mass fraction: 85-95% of a modified polymer emulsion, 3-10% of a modified rosin emulsion, 0-5% of modified melamine formaldehyde resin, 0.1-0.3% of a dispersing agent, 0.1-0.8% of a defoaming agent, 0.1-0.4% of a wetting agent, 0.01-0.8% of a preservative, and 0.1-1% of a thickener; the powder B component consists of the following raw materials by the mass fraction: 40-60% of cement, 0.05-0.8% of a water reducing agent, and 45-60% of a filler. The self-healing polymer cement waterproof coating has a characteristic that small damage (such as cracks of less than 0.5 mm) can be self-repaired and healed after water is absorbed, and mechanical properties after self-healing can be restored to 40-80% that of the undamaged coating; the coating is capable of permanent self repairing for stopping water leakage, still has good water resistance and can be used in a long-term water immersing environment; and various performance indexes can completely meet requirements of GB/T23445-2009.
Description
Technical field
The present invention relates to a kind of polymer cement waterproof paint is and in particular to a kind of self-cure type polymer cement waterproof applies
Material.
Background technology
The bi-component water-proof that polymer cement waterproof paint is made up of polymer emulsion, cement and a certain amount of additive
Coating, it has high performance-price ratio, Diamond Search discharge, good water resistance, good moisture substrate workability and cementability
Can, therefore extremely people's favor.Currently, polymer cement waterproof paint is usually used in Indoor environment waterproof, including toilet bath room, kitchen
Room and balcony etc., the domestic annual market demand is huge, up to 600,000 tons about.Existing polymer cement waterproof paint ought be broken
Bad when, the waterproof layer of its composition will lose efficacy generation Seepage.In recent years, people develop self-closing polymer cement waterproof
Coating, such water-repellent paint is sealed to minute crack to crystallizing produced by the adsorption of calcium ion using active filler
Stifled, thus playing leak-stopping water effect.
At present, self-closing polymer cement waterproof paint can only be accomplished to minute crack to block leak-stopping water, can not at crack
Real self-healing healing, also can there is repeatedly the possibility of percolating water in the later stage.Self-closing polymer cement waterproof in prior art
Coating, such as CN101899243A, CN102320787A, CN104177007A and CN104194463A, they are so-called self-closing
Performance be all by active filler (as penetrant crystalline masterbatch) adsorption of calcium ion is formed insoluble crystalline solid block micro-
Crackle thus being produced from apolipsis leak performance, the generation self-healing phenomenon that it can not be real, there is repeatedly the danger of percolating water.
CN00123946.5 discloses a kind of self-repairing flexible water-proof material, and this invention utilizes water soluble polymer and filler blending to be obtained
Water-repellent paint, has excellent self-healing performance, but water-repellent paint can not contact water, otherwise water soluble polymer the long period
Material can be dissolved in water, then causes whole waterproof damage layer.
Content of the invention
The technical problem to be solved is to provide one kind, and to have a selfreparing effect forever effective, safe and reliable, resistance to
The self-cure type polymer cement waterproof paint of aqueouss energy and good mechanical properties.
The present invention solves its technical problem and employed technical scheme comprise that, a kind of self-cure type polymer cement waterproof paint, bag
Include liquid material component A and powder material B component, liquid material component A and powder material B component are mixed with the mass ratio of 1: 0.8～1.5 (preferably 1: 0.8)
Close and use；Wherein said liquid material component A is made up of the raw material of following mass fraction, and modified polymer emulsion 85～95% is (preferably
90%), dispersant 0.1～0.3% (preferably 0.18%), defoamer 0.1～0.8% (preferably 0.25%), wetting agent 0.1～
0.4% (preferably 0.18%), preservative 0.01～0.8% (preferably 0.15%), modified rosin emulsion 3～10% (preferably 8%),
Modified melamine-formaldehyde resin 0～5% (preferably 1.1%), thickening agent 0.1～1% (preferably 0.14%)；Described powder material B group
Divide and be made up of the raw material of following mass fraction, cement 40～60% (preferably 47.6%), water reducer 0.05～0.8% is (preferably
0.06%), filler 45～70% (preferably 52.34%).
Further, described modified polymer emulsion is modified VAE emulsion or/and modified acrylate emulsion.
Further, described modified rosin emulsion is acrylate modified rosin milk or/and VAE modified rosin emulsion.
Further, described modified melamine-formaldehyde resin is low-molecular weight water-soluble modified melamine-formaldehyde resin.
Further, described dispersant is polyacrylate, Quadrafos, polycarboxylate, cellulose derivative, fatty acid polyglycol
One of glycol ester and sodium lauryl sulphate or two or more mixture；Described defoamer is polydimethylsiloxanes
In alkane, polyoxyethylene polyoxypropylene tetramethylolmethane ether, polyoxyethylene polyoxy propanol amidogen ether and polyoxyethylene polyoxypropylene glycerin ether
One or more mixture；Described wetting agent is isopropyl naphthalene sulfonate or/and sodium butylnaphthalenesulfonate；Described anti-corrosion
Agent is one of benzoic acid, benzoate, sorbic acid, sorbate and parabenses or two or more mixing
Thing；Described thickening agent is hydroxyethyl cellulose.
Further, described cement is white cement or/and ash concrete.
Further, described water reducer is in naphthalene water reducer, sulfamate based water reducer and poly carboxylic acid series water reducer
One or more mixture.
Further, described filler be one of quartz sand, silica flour, wollastonite in powder, Calcium Carbonate, barium sulfate and river sand or
Two or more mixture.
The present invention passes through modified polymer emulsion and active additive (modified rosin emulsion and/or modified cyanurotriamide first
Urea formaldehyde) synergism, make polymer cement waterproof paint become strong in the strand activity of contact water post-consumer polymer, live simultaneously
Property additive spread therewith, therefore the polymer molecular chain at crack can re-start interspersed with tangle, thus giving crack
Self-healing and the performance of healing, belong to the selfreparing water-repellent paint of real meaning, and selfreparing effect is forever effectively, safety can
Lean on；Substantially increase the watertight reliability of polymer cement waterproof coating.
In brief, after the self-cure type polymer cement waterproof paint of the present invention has water suction, micro breakage can voluntarily be repaiied
The multiple, characteristic (crack of ＜ 0.5mm) of healing, and the mechanical property after self-healing can recover to unbroken 40～80%,
Permanent selfreparing leak-stopping water, it is possible to resolve existing self-closing polymer cement waterproof paint absorption calcium ion forms crystal leak stopping and deposits
In the possible difficult problem of seepage repeatedly, and it still has good water resistance, can use, it is each under long-term Soaking environment
Item performance indications can meet the requirement of GB/T23445-2009 completely.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
1st, the preparation of self-cure type polymer cement waterproof paint
(1) preparation of liquid material component A
By 500g modification VAE emulsion, 50g VAE modified rosin emulsion, 1g polyacrylic acid dipersant, 1.5g poly dimethyl
Siloxanes, 1g isopropyl naphthalene sulfonate, 0.8g sorbate preservative and 0.6g hydroxyethyl cellulose put into the round-bottomed flask of 1L
In, mechanical agitation 10min, prepared liquid material component A.
(2) preparation of powder material B component
Weigh 1000g white cement, 1.2g naphthalene water reducer, quartz sand 500g and wollastonite in powder 600g and put into the powder of 3L and divide
In scattered device, disperse 5min, prepared powder material B component.
2nd, performance test
Weigh the liquid material component A of the above-mentioned preparation of 150g and the powder material B component of the above-mentioned preparation of 120g, existed using mechanical agitation
Disperse 6min under 800rpm rotating speed, then carry out scratching film forming by scattered coating, be put in maintenance 4 days under standard conditions, 40
DEG C baking oven maintenance two days, the coating of prepared thickness 2mm.
(1) physical and mechanical property
According to GB/T23445-2009 method, physical and mechanical propertiess test is carried out to it, test result is shown in Table 1.
The physical and mechanical property of the self-cure type polymer cement waterproof paint of table 1- embodiment 1 preparation
(2) self-healing performance
Tested with regard to the method for testing of self-closing performance according to GB/T23445-2009, test result is：The self-closing time
For 10min.
Sample after will be self-closing continues to test 7 days on self-closing device, is then taken off, is placed in 24h under standard conditions,
Carry out self-closing experiment, the self-healing of the sample place of scratching again, percolating water phenomenon will not be produced；Sample is cut into dumbbell shape (sample
The product place of scratching is located at dumbbell shape central authorities and extends vertically through the thin neck of dumbbell), then tensile strength survey is carried out to this dumbbell shape sample
Examination, tensile strength is 1.2MPa.
Embodiment 2
1st, the preparation of self-cure type polymer cement waterproof paint
(1) preparation of liquid material component A
By 500g modified acrylate emulsion, the acrylate modified rosin milk of 30g, 1g polyacrylic acid dipersant,
1.5g polydimethylsiloxane, 1g isopropyl naphthalene sulfonate, 1g sorbate preservative, 1.2g hydroxyethyl cellulose and 8g are modified
Melamine resin is put in the round-bottomed flask of 1L, mechanical agitation 10min, prepared liquid material component A.
(2) preparation of powder material B component
Weigh 1000g white cement, 1.5g naphthalene water reducer, river sand 400g and surface modification wollastonite in powder 600g and put into 3L's
In powder lot dispersing device, disperse 5min, prepared powder material B component.
2nd, performance test
Weigh the above-mentioned prepared liquid material component A of 150g and the above-mentioned prepared powder material B component of 150g, using mechanical agitation
Disperse 6min under 800rpm rotating speed, then carry out scratching film forming by scattered coating, be put in maintenance 4 days under standard conditions,
40 DEG C of baking oven maintenances two days, the coating of prepared thickness 2mm.
(1) physical and mechanical property
According to GB/T23445-2009 method, the test of physical and mechanical propertiess, test result are carried out to it, be shown in Table 2.
The physical and mechanical property of the self-cure type polymer cement waterproof paint of table 2- embodiment 2 preparation
(2) self-healing performance
Tested with regard to the method for testing of self-closing performance according to GB/T23445-2009, result is：The self-closing time is
30min.
Sample after will be self-closing continues to test 7 days on self-closing device, is then taken off, is placed in 24h under standard conditions,
Carry out self-closing experiment, the self-healing of the sample place of scratching again, percolating water phenomenon will not be produced；Sample is cut into dumbbell shape (sample
The product place of scratching is located at dumbbell shape central authorities and extends vertically through the thin neck of dumbbell), then tensile strength survey is carried out to this dumbbell shape sample
Examination, tensile strength is 1.1MPa.
Embodiment 3
1st, the preparation of self-cure type polymer cement waterproof paint
(1) preparation of liquid material component A
By 500g modified acrylate emulsion, the acrylate modified rosin milk of 18g, 1g polyacrylic acid dipersant,
1.5g polydimethylsiloxane, 1g isopropyl naphthalene sulfonate, 1g sorbate preservative, 1.5g hydroxyethyl cellulose and 20g change
Property melamine resin is put in the round-bottomed flask of 1L, mechanical agitation 10min, prepared liquid material component A.
(2) preparation of powder material B component
Weigh 1000g ash concrete, 1.8g naphthalene water reducer, silica flour 400g and surface modification wollastonite in powder 700g and put into 3L
Powder lot dispersing device in, disperse 5min, prepared powder material B component.
2nd, performance test
Weigh the liquid material component A of the above-mentioned preparation of 100g and the powder material B component of the above-mentioned preparation of 150g, existed using mechanical agitation
Disperse 6min under 800rpm rotating speed, then carry out scratching film forming by scattered coating, be put in maintenance 4 days under standard conditions, 40
DEG C baking oven maintenance two days, the coating of prepared thickness 2mm.
(1) physical and mechanical property
According to GB/T23445-2009 method, physical and mechanical propertiess test, test result are carried out to it, be shown in Table 3.
The physical and mechanical property of the self-cure type polymer cement waterproof paint of table 3- embodiment 3 preparation
(2) self-healing performance
Tested with regard to the method for testing of self-closing performance according to GB/T23445-2009, test result is：The self-closing time
For 60min.
Sample after will be self-closing continues to test 7 days on self-closing device, is then taken off, is placed in 24h under standard conditions,
Carry out self-closing experiment, the self-healing of the sample place of scratching again, percolating water phenomenon will not be produced；Sample is cut into dumbbell shape (sample
The product place of scratching is located at dumbbell shape central authorities and extends vertically through the thin neck of dumbbell), then tensile strength survey is carried out to this dumbbell shape sample
Examination, tensile strength is 1.0MPa.
Claims (9)
1. a kind of self-cure type polymer cement waterproof paint is it is characterised in that include liquid material component A and powder material B component, liquid material A
Component and powder material B component are used in mixed way with 1: 0.8～1.5 mass ratio；Wherein, described liquid material component A is by following mass fraction
Raw material composition, modified polymer emulsion 85～95%, modified rosin emulsion 3～10%, modified melamine-formaldehyde resin 0～
5%, dispersant 0.1～0.3%, defoamer 0.1～0.8%, wetting agent 0.1～0.4%, preservative 0.01～0.8%, thickening
Agent 0.1～1%；Described powder material B component is made up of the raw material of following mass fraction, cement 40～60%, and water reducer 0.05～
0.8%, filler 45～60%.
2. self-cure type polymer cement waterproof paint according to claim 1 it is characterised in that include liquid material component A and
Powder material B component, liquid material component A and powder material B component are used in mixed way with 1: 0.8 mass ratio；Wherein, described liquid material component A by with
The raw material composition of lower mass fraction, modified polymer emulsion 90%, modified rosin emulsion 8%, modified melamine-formaldehyde resin
1.1%, dispersant 0.18%, defoamer 0.25%, wetting agent 0.18%, preservative 0.15%, thickening agent 0.14%；Described powder
Material B component is made up of the raw material of following mass fraction, cement 47.6%, water reducer 0.06%, filler 52.34%.
3. self-cure type polymer cement waterproof paint according to claim 1 and 2 is it is characterised in that described modified poly
Thing emulsion is modified VAE emulsion or/and modified acrylate emulsion.
4. self-cure type polymer cement waterproof paint according to claim 1 and 2 is it is characterised in that described modified rosin
Emulsion is acrylate modified rosin milk or/and VAE modified rosin emulsion.
5. self-cure type polymer cement waterproof paint according to claim 1 and 2 it is characterised in that described modification trimerization
Cyanamide formaldehyde resin is low-molecular weight water-soluble modified melamine-formaldehyde resin.
6. self-cure type polymer cement waterproof paint according to claim 1 and 2 is it is characterised in that described dispersant is
In polyacrylate, Quadrafos, polycarboxylate, cellulose derivative, fatty acid polyethylene glycol ester and sodium lauryl sulphate
One or more mixture；Described defoamer is polydimethylsiloxane, polyoxyethylene polyoxypropylene tetramethylolmethane
One of ether, polyoxyethylene polyoxy propanol amidogen ether and polyoxyethylene polyoxypropylene glycerin ether or two or more mixture；Institute
Stating wetting agent is isopropyl naphthalene sulfonate or/and sodium butylnaphthalenesulfonate；Described preservative be benzoic acid, benzoate, sorbic acid,
One of sorbate and parabenses or two or more mixture；Described thickening agent is hydroxy ethyl fiber
Element.
7. self-cure type polymer cement waterproof paint according to claim 1 and 2 is it is characterised in that described cement is white
Cement or/and ash concrete.
8. self-cure type polymer cement waterproof paint according to claim 1 and 2 is it is characterised in that described water reducer is
One of naphthalene water reducer, sulfamate based water reducer and poly carboxylic acid series water reducer or two or more mixture.
9. self-cure type polymer cement waterproof paint according to claim 1 and 2 is it is characterised in that described filler is stone
One of sand, silica flour, wollastonite in powder, Calcium Carbonate, barium sulfate and river sand or two or more mixture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610765404.9A CN106396544B (en) | 2016-08-30 | 2016-08-30 | A kind of self-cure type polymer cement waterproof paint |
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| CN201610765404.9A CN106396544B (en) | 2016-08-30 | 2016-08-30 | A kind of self-cure type polymer cement waterproof paint |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010890A (en) * | 2017-05-12 | 2017-08-04 | 台州中峰建筑材料有限公司 | A kind of environmental protective polymer cement wall surface waterproofing slurry and preparation method thereof |
| CN107555918A (en) * | 2017-08-21 | 2018-01-09 | 北京大津硅藻新材料股份有限公司 | A kind of polymer cement mortar and preparation method thereof and construction method |
| CN107868557A (en) * | 2017-11-30 | 2018-04-03 | 北京东方雨虹防水技术股份有限公司 | A kind of high water-resistant type polymer cement waterproof paint |
| CN108841277A (en) * | 2018-05-30 | 2018-11-20 | 周晓东 | A kind of preparation method of polymer cement waterproof paint |
| CN110482949A (en) * | 2019-08-20 | 2019-11-22 | 东方雨虹民用建材有限责任公司 | A kind of polymer cement waterproof paint and preparation method thereof |
| CN110510932A (en) * | 2019-09-12 | 2019-11-29 | 深圳市奇信集团股份有限公司 | A kind of self-healing polymer cement waterproof paint and preparation method thereof |
| CN112252490A (en) * | 2020-10-13 | 2021-01-22 | 春涛国际建筑有限公司 | Special waterproof material construction method and system |
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2016
- 2016-08-30 CN CN201610765404.9A patent/CN106396544B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010890A (en) * | 2017-05-12 | 2017-08-04 | 台州中峰建筑材料有限公司 | A kind of environmental protective polymer cement wall surface waterproofing slurry and preparation method thereof |
| CN107010890B (en) * | 2017-05-12 | 2020-04-10 | 台州中峰建筑材料有限公司 | Environment-friendly polymer cement wall waterproof slurry and preparation method thereof |
| CN107555918A (en) * | 2017-08-21 | 2018-01-09 | 北京大津硅藻新材料股份有限公司 | A kind of polymer cement mortar and preparation method thereof and construction method |
| CN107868557A (en) * | 2017-11-30 | 2018-04-03 | 北京东方雨虹防水技术股份有限公司 | A kind of high water-resistant type polymer cement waterproof paint |
| CN108841277A (en) * | 2018-05-30 | 2018-11-20 | 周晓东 | A kind of preparation method of polymer cement waterproof paint |
| CN110482949A (en) * | 2019-08-20 | 2019-11-22 | 东方雨虹民用建材有限责任公司 | A kind of polymer cement waterproof paint and preparation method thereof |
| CN110482949B (en) * | 2019-08-20 | 2021-11-19 | 东方雨虹民用建材有限责任公司 | Polymer cement waterproof coating and preparation method thereof |
| CN110510932A (en) * | 2019-09-12 | 2019-11-29 | 深圳市奇信集团股份有限公司 | A kind of self-healing polymer cement waterproof paint and preparation method thereof |
| CN112252490A (en) * | 2020-10-13 | 2021-01-22 | 春涛国际建筑有限公司 | Special waterproof material construction method and system |
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| Publication number | Publication date |
|---|---|
| CN106396544B (en) | 2018-10-23 |
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